The MK3 is our 14.5" variant. These are Do-It-All uppers built to be extremely accurate, reliable, and affordable. First rebarrel is still free and every component has a lifetime warranty.
Each upper ships with a unique checklist noting the ejection pattern with brass cased ammunition, function, lock back on empty, and any buffer/spring recommendations I may have.
The Basics
14.5" Ballistic Advantage .750" Hanson 5.56 Upper With Pinned & Welded Extended A2 Hider, 13" KAK Mlock Rail, AO TMS BCG, Factory Pinned Gas Block, Mil-Spec Upper and Charging handle
The Specifics
Barrel:
Manufacturer - Ballistic Advantage
Length/Chamber - 14.5" 5.56
Twist - 1:7 Twist
Material - 4150 Chrome Moly-Vanadium
Profile - Hanson .750"
Gas System - Mid-Length
Finish - Nitride
Thread Pitch - 1/2x28
Gas Port - .078
*Gas Blocks Are Factory Pinned*
1st Rebarrel - FREE
Barrel nut is sequentially torqued down to 50 FT-lbs. Starting at 25, then 35, and then finally 50 FT-lbs to ensure proper mating of the threads.
If you legit burn out a barrel, like 10,000 -25,000 rounds, and the barrel becomes inaccurate I will rebarrel it for you for free. Good luck.
Bolt Carrier Group:
Brand: AO Precision True Mil Spec BCG
Bolt Material - C158 Alloy
Carrier Material - 8620 Alloy
Gas Key Material - 4130 Alloy
Profile - Full Auto
Finish - Phosphate/Chrome
Gas Key Screws - Grade 8 (torqued and staked to Mil-Spec)
Forward Assist Cuts
Mil-Spec Firing Pin (Hard Chrome Coated)
*Individualy MPI/HPT tested
Handguard:
Manufacturer - KAK
Length - 13"
Material - 6061 T6 Aluminum
Finish - Hard Coat Black Anodization
Mounting Platform - Mlock
Barrel nut torqued to 50 FT-lbs
Upper Receiver:
Manufacturer - Anderson
Material - 7075 T6 Aluminum
Machined from Forged Aluminum
Finish - Type 3 Hardcoat Anodized Black
Standard Forward Assist
Standard Dust Cover
M4 Feed Ramps
NOT T-Marked, if you care...
Charging Handle:
Material - 7075 T6
Machined from Forged Aluminum
Finish - Type 3 Hardcoat Anodized + Teflon Coated for Smoother Operation
Gas Block:
Material - 4140 Steel
Finish - Nitride
Style - Low Profile
Size - .750"
Attachment Method - 2x Set Screws
Factory Pinned
Not Adjustable
Set screws are torqued to 30 IN-lbs. and have High-Temp threadlocker applied for extra security.
Gas Tube:
Length - Mid Length
Material - Stainless Steel
Muzzle Device
KAK A2 Extended Flash Hider
Finish - Black Nitride
Thread - 1/2x28
***any muzzle device you want can be substituted for an additional cost***
When Pinned and Welded in place this will bring the MK3 to a legal 16"+ If you do not want it pinned please write that down in the order notes!
If you have any questions or requests please leave them in the order notes!